Method for separating nickel from material with low nickel content

摘要

The invention relates to a method for separating nickel and other valuable metalsparticularly from material having low nickel content, which contains iron and magnesium in addition to nickel and other valuable metals.The material havinglow nickel content is subjected to pulpingand atmospheric leaching in acidic and oxidising conditions, in which the majority of the metals in themate- rialdissolve and the iron is partially precipitated. The precipitated iron is sepa- rated from the solution, after which nickel and the other dissolved valuable metalsare precipitated as sulphides.